Overwintering guide
How to overwinter hybrid trumpet vine
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills hybrid trumpet vine in winter
Cutting hybrid trumpet vine hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.
More hybrid trumpet vine care
Overwintering hybrid trumpet vine — FAQ
Does hybrid trumpet vine need to come indoors for winter?
Hybrid trumpet vine is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Hybrid trumpet vine is properly hardy and overwinters outside without fuss. Tidy away anything dead or diseased, apply a mulch over the crown to steady soil temperatures, and otherwise leave it alone — many hardy plants actually need a cold period to flower and grow well the following year. Save hard pruning for the right season rather than doing it in autumn.
When should I move hybrid trumpet vine for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water hybrid trumpet vine in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills hybrid trumpet vine over winter?
Cutting hybrid trumpet vine hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.